Selection of electrode should consider the following principles:
(1) According to the welded Welding Electrodes Manufacturers In China material select the appropriate type of category (categories). For example, the welding of carbon

Steel or ordinary low-alloy steel, structural steel welding rod should be used.

(2) performance of the weld and base metal properties to the same chemical composition or the type of weld and base metal of the same to ensure

Be the same.

Selection of structural steel welding rod, the first under the tensile strength of the base material by "and strong" intensity level relative to the principles of selection

With the structural steel welding rod. Secondly, the weld properties (ductility, toughness) demanding major structures, or easily

I cracks and structural steel (thickness, rigidity, low temperature welding) welding should be used in alkaline

Of the electrode, and even ultra-low hydrogen electrodes, high toughness electrodes.

With stainless steel electrodes and molybdenum and chromium-molybdenum steel, heat-resistant electrodes, the chemical composition should be based on the type of base material selected chemical

Components of the same type of Aluminum Electrodes.

(3) electrode welding process performance to meet operational needs. If the non-horizontal-position welding, should use appropriate

Welding electrodes at various locations. Again, down the vertical welding, pipe welding, welding the bottom, cover pass, gravity welding

May make use of appropriate special electrode.

In addition, to ensure that performance requirements under the premise should choose low price, high deposition efficiency of the electrode.